338 Lapua Primers

I'm running low on my Federal Match GM215M primers and have been considering switching to WLRM primers. I was wondering what primers worked best for others in their 338 lapuas? I was considering the WRLM primers due to the link provided by ss7mm back in February which showed the WLRM's being the most consistent. I wasn't sure though just how much primer power I would need to light up that much powder?